[INFO] fetching crate mackerel_plugin 0.2.6...
[INFO] checking mackerel_plugin-0.2.6 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate mackerel_plugin 0.2.6 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate mackerel_plugin 0.2.6 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mackerel_plugin 0.2.6
[INFO] finished tweaking crates.io crate mackerel_plugin 0.2.6
[INFO] tweaked toml for crates.io crate mackerel_plugin 0.2.6 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 90 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding strsim v0.10.0 (latest: v0.11.1)
[INFO] [stderr]       Adding strum v0.25.0 (latest: v0.26.2)
[INFO] [stderr]       Adding strum_macros v0.25.3 (latest: v0.26.2)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.55.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive_utils v0.14.1
[INFO] [stderr]   Downloaded auto_enums v0.8.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90128bf5b50365342664123453e0c164f3da9d53903a6babb99bcdf82928a24e
[INFO] running `Command { std: "docker" "start" "-a" "90128bf5b50365342664123453e0c164f3da9d53903a6babb99bcdf82928a24e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90128bf5b50365342664123453e0c164f3da9d53903a6babb99bcdf82928a24e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90128bf5b50365342664123453e0c164f3da9d53903a6babb99bcdf82928a24e", kill_on_drop: false }`
[INFO] [stdout] 90128bf5b50365342664123453e0c164f3da9d53903a6babb99bcdf82928a24e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b177dc1281753dbd73831b867493301520cc10fca6dde06e608fac4387e6d125
[INFO] running `Command { std: "docker" "start" "-a" "b177dc1281753dbd73831b867493301520cc10fca6dde06e608fac4387e6d125", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling darling_core v0.20.8
[INFO] [stderr]    Compiling strum_macros v0.25.3
[INFO] [stderr]    Compiling derive_utils v0.14.1
[INFO] [stderr]    Compiling relative-path v1.9.2
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling auto_enums v0.8.5
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling rstest_macros v0.18.2
[INFO] [stderr]     Checking strum v0.25.0
[INFO] [stderr]    Compiling darling_macro v0.20.8
[INFO] [stderr]    Compiling darling v0.20.8
[INFO] [stderr]    Compiling serde_with_macros v3.7.0
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking serde_with v3.7.0
[INFO] [stderr]     Checking rstest v0.18.2
[INFO] [stderr]     Checking mackerel_plugin v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.67s
[INFO] running `Command { std: "docker" "inspect" "b177dc1281753dbd73831b867493301520cc10fca6dde06e608fac4387e6d125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b177dc1281753dbd73831b867493301520cc10fca6dde06e608fac4387e6d125", kill_on_drop: false }`
[INFO] [stdout] b177dc1281753dbd73831b867493301520cc10fca6dde06e608fac4387e6d125